package com.atlin.project.aop;

import cn.hutool.core.collection.CollectionUtil;
import com.atlin.beaconsapicommon.model.domain.SysOperLog;
import com.atlin.beaconsapicommon.model.domain.SysUser;
import com.atlin.project.annotation.Log;
import com.atlin.project.manager.AsyncManager;
import com.atlin.project.manager.factory.AsyncFactory;
import com.atlin.project.model.enums.BusinessStatus;
import com.atlin.project.service.SysUserService;
import com.atlin.project.utils.json.GsonFilterUtils;
import com.atlin.project.utils.ip.NetUtils;
import com.atlin.project.utils.ServletUtils;
import com.google.gson.Gson;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.NamedThreadLocal;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.Date;
import java.util.Map;

/**
 * @author atlin
 * @description 操作日志记录处理 **必须登录**
 * @createDate 2024/9/5 22:13
 */
@Aspect
@Component
public class LogAspect {

    private static final Logger log = LoggerFactory.getLogger(LogAspect.class);

    /**
     * 排除敏感字段
     */
    public static final String[] EXCLUDE_PROPERTIES = {"userPassword", "isDelete", "newPassword", "confirmPassword"};

    /**
     * 计算操作消耗时间
     */
    private static final ThreadLocal<Long> TIME_THREADLOCAL = new NamedThreadLocal<>("Cost Time");

    /**
     * 用户服务
     */
    @Resource
    private SysUserService sysUserService;

    /**
     * 处理请求前执行
     */
    @Before(value = "@annotation(controllerLog)")
    public void doBefore(JoinPoint joinPoint, Log controllerLog) {
        TIME_THREADLOCAL.set(System.currentTimeMillis());
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Log controllerLog, Object jsonResult) {
        handleLog(joinPoint, controllerLog, null, jsonResult);
    }


    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     */
    @AfterThrowing(value = "@annotation(controllerLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Log controllerLog, Exception e) {
        handleLog(joinPoint, controllerLog, e, null);
    }


    protected void handleLog(final JoinPoint joinPoint, Log controllerLog, final Exception e, Object jsonResult) {
        try {
            RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
            HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();
            // 获取当前的用户
            // 用户未登录直接抛出异常
            SysUser loginUser = sysUserService.getLoginUser(request);

            // 日志数据
            SysOperLog operLog = new SysOperLog();
            operLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 操作时间
            operLog.setOperTime(new Date());

            //请求地址
            String ip = NetUtils.getIpAddress(request);
            operLog.setOperIp(ip);
            operLog.setOperUrl(StringUtils.substring(request.getRequestURI(), 0, 255));
            operLog.setUserAccount(loginUser.getUserAccount());

            if (e != null) {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }

            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(StringUtils.join(className, ".", methodName, "()"));
            //设置请求方式
            operLog.setRequestMethod(ServletUtils.getRequest().getMethod());
            //处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, operLog, jsonResult);
            // 设置消耗时间
            operLog.setCostTime(System.currentTimeMillis() - TIME_THREADLOCAL.get());
            //保存数据库
            AsyncManager.me().execute(AsyncFactory.recordOper(operLog));

        } catch (Exception ex) {
            //记录本地异常记录
            log.error("异常信息：{} \n {}", ex.getMessage(), ex.toString());

        } finally {
            TIME_THREADLOCAL.remove();
        }
    }

    /**
     * 获取注解中对方法的描述 用于Controller层的注解
     *
     * @param log     日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, Log log, SysOperLog operLog, Object jsonResult) throws Exception {
        // 设置业务类型
        operLog.setTitle(log.title());
        operLog.setBusinessType(log.businessType().ordinal());
        operLog.setOperatorType(log.operatorType().ordinal());
        if (log.isSaveRequestData()) {
            setRequestValue(joinPoint, operLog, log.excludeParamNames());
        }
        if (log.isSaveResponseData() && jsonResult != null) {
            operLog.setJsonResult(StringUtils.substring(properFilterAndTransformString(jsonResult, EXCLUDE_PROPERTIES), 0, 2000));
        }
    }

    /**
     * 获取请求的参数放入 operLog 中
     *
     * @param operLog           操作日志
     * @param excludeParamNames 需要排除的敏感参数字段名
     */
    private void setRequestValue(JoinPoint joinPoint, SysOperLog operLog, String[] excludeParamNames) throws Exception {
        Map<?, ?> paramsMap = ServletUtils.getParamsMap(ServletUtils.getRequest());
        String requestMethod = operLog.getRequestMethod();
        if (CollectionUtil.isEmpty(paramsMap) && (HttpMethod.PUT.name().equals(requestMethod)
                || HttpMethod.POST.name().equals(requestMethod))) {
            String params = argsArrayToString(joinPoint.getArgs(), excludeParamNames);
            operLog.setOperParam(StringUtils.substring(params, 0, 2000));
        } else {
            operLog.setOperParam(StringUtils.substring(properFilterAndTransformString(paramsMap, ArrayUtils.addAll(excludeParamNames, EXCLUDE_PROPERTIES)), 0, 2000));
        }
    }


    /**
     * 属性过滤并转化为字符串
     *
     * @param target            需要过滤的对象
     * @param excludeParamNames 过滤字段
     * @return 字符串
     */
    private String properFilterAndTransformString(Object target, String[] excludeParamNames) {
        if (target == null) {
            return "";
        }
        Gson gson = GsonFilterUtils.propertyFilter(excludeParamNames);
        return gson.toJson(target);
    }

    /**
     * 参数拼接
     */
    private String argsArrayToString(Object[] paramsArray, String[] excludeParamNames) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (Object o : paramsArray) {
                if (o != null && !isFilterObject(o)) {
                    try {
                        Gson gson = GsonFilterUtils.propertyFilter(ArrayUtils.addAll(excludeParamNames, EXCLUDE_PROPERTIES));
                        String jsonObject = gson.toJson(o);
                        params += jsonObject.toString() + " ";
                    } catch (Exception e) {
                    }
                }
            }

        }
        return params;
    }

    /**
     * 判断是否为需要过滤的对象。
     *
     * @param o 对象信息
     * @return 如果是需要过滤的对象返回true ，否则返回 false
     */
    @SuppressWarnings("rawtypes")
    private boolean isFilterObject(final Object o) {
        Class<?> oClass = o.getClass();
        if (oClass.isArray()) {
            return oClass.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(oClass)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                return value instanceof MultipartFile;
            }
        } else if (Map.class.isAssignableFrom(oClass)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                Map.Entry entry = (Map.Entry) o;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }
}
